Earthquake · reviewed by a seismologist
M 2.6md
Earthquake near Corozal, PR
No earthquake was likely felt in Corozal in the 24 hours to 7:52 pm AST (23:52 UTC). The last one was M 4.8, 80 km (50 mi) SW, at 9:19 am AST on 18 September 2026, estimated intensity III (weak) in town; 86 felt reports to USGS. Every earthquake near Corozal
This page: a magnitude 2.6 earthquake was recorded 2 km (1 mi) east-northeast of Corozal, PR, at 12:50 am AST on 7 December 2018 (04:50 UTC), 55 km deep.
USGS: 2 km ENE of Corozal, Puerto Rico
26 km (16 mi) WSW of San Juan, PR · 15 km (9 mi) WSW of Bayamón, PR
- When
- 12:50 am AST on 7 December 2018 ()
- Where
- 2 km (1 mi) east-northeast of Corozal, PR · earthquakes near Corozal
- Magnitude
- M 2.6 (md)
- Depth
- 55 km below the surface
- Felt
- no reports yet
- Nearest
- Corozal Municipio, 5 km SSW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2897 days ago
Earthquake alerts for Corozal, PR
Get a notification in this browser when USGS records an earthquake near Corozal, PR. No account or email needed.
Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.
At this magnitude and depth it was probably too small to be felt, even directly above it. In Corozal, 2 km away, the estimate is intensity II (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.
Earthquakes near other towns within 30 km: H. Rivera Colon, Galateo, Río Lajas, Toa Alta, San José, Naranjito.
How big was it?
This earthquake released about 270 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 57,000× the energy of this one
- Magna, Utah 2020 M 5.7 40,000× the energy of this one
- Around the size people start to feel M 3.0 3.6× the energy of this one
- This earthquake M 2.6 about 270 lb of TNT
Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.
For this area
No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.
Before 2016, the USGS record lists 3 earthquakes of M5 or more within 50 km:
- 5.8 12 km N of Garrochales, Puerto Rico · 37 km NW of this epicentre
- 5.1 3 km W of Aguas Buenas, Puerto Rico · 20 km ESE of this epicentre
- 5.0 3 km N of Brenas, Puerto Rico · 18 km NNW of this epicentre
Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.
Where
Epicentre 18.3453, -66.2981. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Corozal Municipio, PR | 5 km (3 mi) | SSW | earthquakes near Corozal Municipio |
| Toa Alta Municipio, PR | 6 km (4 mi) | ENE | earthquakes near Toa Alta Municipio |
| Naranjito Municipio, PR | 8 km (5 mi) | SE | earthquakes near Naranjito Municipio |
| Vega Alta Municipio, PR | 11 km (7 mi) | NNW | earthquakes near Vega Alta Municipio |
| Morovis Municipio, PR | 13 km (8 mi) | WSW | earthquakes near Morovis Municipio |
| Bayamón Municipio, PR | 14 km (8 mi) | E | earthquakes near Bayamón Municipio |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
11 earthquakes have been recorded within 50 km since this one.
- 1.9 2 km SW of Las Ollas, Puerto Rico
- 2.6 14 km N of Brenas, Puerto Rico
- 1.8 1 km NW of H. Rivera Colon, Puerto Rico
- 1.6 3 km SE of Santa Isabel, Puerto Rico
- 2.8 26 km NNW of Tierras Nuevas Poniente, Puerto Rico
- 2.9 2 km ESE of H. Rivera Colon, Puerto Rico
- 2.3 4 km ESE of Ponce, Puerto Rico
- 2.0 Puerto Rico region
- 1.6 4 km SSW of Playita Cortada, Puerto Rico
- 2.2 2 km ESE of Bajadero, Puerto Rico
- 2.7 6 km NNW of Garrochales, Puerto Rico
Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.
On USGS
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.